Atlas N 40005059 Great Northern Railway GN ALCO FA-1 Diesel Locomotive August 15, 2026 By 0 At the height of cab unit popularity, this was ALCO’s foray into the market. Over 600 units were build from 1946 to 1956; 400 of them being FA’s. Model: ALCO FA-1 Diesel Locomotive. Finely painted and lettered.